"Reports of sudden hearing loss, both with and without accompanying vestibular symptoms (tinnitus, vertigo or dizziness), in strong temporal relationship to dosing with Viagra (sildenafil), Cialis (tadalafil) or Levitra (vardenadil). Hearing loss was also reported in a few patients in clinical trials of these drugs. There have also been cases of hearing loss reported in patients using Revatio (sildenafil) for the treatment of pulmonary arterial hypertension (PAH). Though no causal relationship has been demonstrated, FDA believed that the strong temporal relationship between the use of PDE5 inhibitors and sudden hearing loss in these cases warranted revisions to the product labeling for the drug class."
sourced from FDA websiteRegardless of your use of any medications, sudden changes in hearing is abnormal and should be treated immediately by your physician or go to the hospital. Treatments to reverse sudden hearing loss are only effective for a limited time. ACT QUICKLY!
At this time there is no specific information as to who would be more likely to be affected. However there seems to be a correlation between aging male adults who potentially may have a degree of hearing loss and potential for ED.
Potential warning signs may or may not exist, but some patients did report ringing in the ears, and dizziness.
The FDA has reported that approximately one third of patients who experienced sudden hearing loss, reported a temporary hearing loss. In the remaining patients who reported sudden hearing loss, the hearing loss was ongoing at the time of the report (2007) the final outcome was not described. Almost all of the cases reported, the hearing loss was single sided.
In all cases of use for prescription drugs, consult your physician and report any and all abnormalities.